éçæ¯ä¸ä¸ªæ¯è¾å®½æ³çæ¦å¿µï¼20å¹´åçéçåºæ¬ä¸æçå°±æ¯é»éæ¿å¶ä½çæ çï¼éçä¸éé¢æè´¨çæ®åï¼é»éæè´¨éæ¸ç被ä¸éé¢æ¿æï¼å æ¬ééæ¿æï¼ä»£æ¿ï¼ä½æ¯ä¾ç¶å¾å¤äººä¹ æ¯çå°ä¸éé¢æ ç称ä½éçãè³äºé¢ä¸»æå°çéçæ¯åªç§æè´¨ï¼ä¸å¦¨æé½å ¨é¢ç讲解ä¸ä¸ã
1ï¼çæ£çéçï¼ä¸»è¦æ¯æé»éçï¼ãéæç¸å¯¹æ¥è¯´ï¼æ¯è¾å®¹æè èçï¼å¸¸è§çè è液æä¸æ°¯åéç³»åãæ°¯åéç³»åãè¿æ°§å氢系åãé¬é ¸ç³»åçã
2ï¼ä¸éé¢çåééçãä¸éé¢æè´¨ç¸å¯¹éææ¥è¯´ï¼è èé¾åº¦ç¨å¤§ä¸äºï¼å¸¸è§çè èæ¹å¼æçµè§£èå»ååå¦èå»ä¸¤å¤§ç±»ãå°±åå¦è èæ¥è¯´ï¼ä¸»è¦çè è液æä¸æ°¯åéç³»åãçæ°´ç³»åçã
3ï¼éè¦å¼ºè°çä¸ç¹å°±æ¯ï¼å¾å¤äººçå°è èï¼ç«é©¬å°±æ³å°ç¡«é ¸ç¡é ¸çï¼å°½ç®¡æ¤ç±»ç©è´¨é½å±äºå¼ºè èçåå·¥åæï¼ä½å¨æ çè èå·¥èºä¸å¹¶ä¸è½åç¬ä½¿ç¨ï¼åæ¶è¿è¦èèå°æè èå±çæ¿åè½åã